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Defense In Depth
Defence in depth (also known as deep defence or elastic defence) is a military strategy that seeks to delay rather than prevent the advance of an attacker, buying time and causing additional casualties by yielding space. Rather than defeating an attacker with a single, strong defensive line, defence in depth relies on the tendency of an attack to lose momentum over time or as it covers a larger area. A defender can thus yield lightly defended territory in an effort to stress an attacker's logistics or spread out a numerically superior attacking force. Once an attacker has lost momentum or is forced to spread out to pacify a large area, defensive counter-attacks can be mounted on the attacker's weak points, with the goal being to cause attrition or drive the attacker back to its original starting position. Strategy A conventional defence strategy would concentrate all military resources at a front line, which, if breached by an attacker, would leave the remaining defenders in d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Strategy
Military strategy is a set of ideas implemented by military organizations to pursue desired Strategic goal (military), strategic goals. Derived from the Greek language, Greek word ''strategos'', the term strategy, when first used during the 18th century, was seen in its narrow sense as the "art of the general", or "the art of arrangement" of troops. and deals with the planning and conduct of campaigns. The father of Western modern strategic studies, Carl von Clausewitz (1780–1831), defined military strategy as "the employment of battles to gain the end of war." B. H. Liddell Hart's definition put less emphasis on battles, defining strategy as "the art of distributing and applying military means to fulfill the ends of policy". Hence, both gave the preeminence to political aims over military goals. Sun Tzu (544–496 BC) is often considered as the father of Eastern military strategy and greatly influenced Chinese, Japanese, Korean and Vietnamese historical and modern war tactics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dragon's Teeth (fortification)
Dragon's teeth are Pyramid (geometry), pyramidal anti-tank obstacles of reinforced concrete first used during the Second World War to impede the movement of tanks and mechanised infantry. The idea was to slow down and channel tanks into Kill zone, killing zones where they could easily be disposed of by anti-tank weapons. They were employed extensively, particularly on the Siegfried Line. World War II Dragon's teeth were used by several armies in the European Theatre of World War II, European theatre. The Wehrmacht, Germans made extensive use of them on the Siegfried Line and the Atlantic Wall. Typically, each tooth was tall. Land mines were often laid between teeth, and further obstacles were constructed along the lines of teeth, such as barbed wire to impede infantry or diagonally-placed steel beams to further hinder tanks. Many were laid in the United Kingdom in 1940–1941, as part of the effort to strengthen the country's British anti-invasion preparations of World War II ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defence-in-depth (Roman Military)
Defence-in-depth is the term used by American political analyst Edward Luttwak (born 1942) to describe his theory of the defensive strategy employed by the Late Roman army in the third and fourth centuries AD. Luttwak's ''Grand Strategy of the Roman Empire'' (1976) launched the thesis that in the third and early fourth centuries, the Imperial Roman army's defence strategy mutated from "forward defence" (or "preclusive defence") during the Principate era (30 BC-AD 284) to "defence-in-depth" in the fourth century. "Forward-" or "preclusive" defence aimed to neutralise external threats before they breached the Roman borders: the barbarian regions neighbouring the borders were envisaged as the theatres of operations. In contrast, "defence-in-depth" would not attempt to prevent incursions into Roman territory, but aimed to neutralise them on Roman soil - in effect turning border provinces into combat zones. Scholarly opinion generally accepts "forward-defence" as a valid description ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Luttwak
Edward Nicolae Luttwak (born 4 November 1942) is an American author known for his works on grand strategy, military strategy, geoeconomics, military history, and international relations. He is best known for being the author of '' Coup d'État: A Practical Handbook''. His book ''Strategy: The Logic of War and Peace'', also published in Chinese, Russian and ten other languages, is widely used at war colleges around the world. His books are currently published in 29 languages besides English. Early life Luttwak was born into a Jewish family in Arad, Romania that fled Soviet occupation after World War II. He was thereafter raised in Italy and England. Career After attending a boarding school in Berkshire, where he joined the British Army cadet corps, Luttwak moved to London at the age of 16 and went to a grammar school. He then studied analytical economics at the London School of Economics. In 1968, when he was 26 and working in London as a consultant for the oil industry, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Legions
The Roman legion (, ) was the largest military unit of the Roman army, composed of Roman citizens serving as legionaries. During the Roman Republic the manipular legion comprised 4,200 infantry and 300 cavalry. After the Marian reforms in 107 BC, the legions were formed of 5,200 men and were restructured around 10 cohorts, the first cohort being double strength. This structure persisted throughout the Principate and Roman Empire, middle Empire, before further changes in the fourth century resulted in new formations of around 1,000 men. Size The size of a typical legion varied throughout the history of ancient Rome, with complements ranging from 4,200 legionaries and 300 ''equites'' (drawn from the wealthier classes – in early Rome all troops provided their own equipment) in the Republic, to 5,500 in the Imperial period, when most legions were led by a Roman Imperial Legate. A legion had 4,800 Legionary, legionaries (in 10 Cohort (military unit), cohorts of 6 centuries o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encirclement
Encirclement is a military term for the situation when a force or target is isolated and surrounded by enemy forces. The situation is highly dangerous for the encircled force. At the military strategy, strategic level, it cannot receive Military logistics, supplies or reinforcements, and on the military tactics, tactical level, the units in the force can be subject to an attack from several sides. Lastly, since the force cannot withdrawal (military), retreat, unless it is relief (military), relieved or can break out, it must fight to the death or surrender (military), surrender. A special kind of encirclement is the siege. In that case, the encircled forces are enveloped in a fortification, fortified position in which long-lasting supplies and strong defences are in place, allowing them to withstand attacks. Sieges have taken place in almost all eras of warfare. History Encirclement has been used throughout the centuries by military leaders, including generals such as Alex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hannibal
Hannibal (; ; 247 – between 183 and 181 BC) was a Punic people, Carthaginian general and statesman who commanded the forces of Ancient Carthage, Carthage in their battle against the Roman Republic during the Second Punic War. Hannibal's father, Hamilcar Barca, was a leading Carthaginian general during the First Punic War. His younger brothers were Mago Barca, Mago and Hasdrubal Barca, Hasdrubal; his brother-in-law was Hasdrubal the Fair, who commanded other Carthaginian armies. Hannibal lived during a period of great tension in the Mediterranean Basin, triggered by the emergence of the Roman Republic as a great power with its defeat of Carthage in the First Punic War. Revanchism prevailed in Carthage, symbolized by the pledge that Hannibal made to his father to "never be a friend of Rome". In 218 BC, Hannibal attacked Saguntum (modern Sagunto, Spain), an ally of Rome, in Hispania, sparking the Second Punic War. Hannibal invaded Italy by Hannibal's crossing of the Alps, cross ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Cannae
The Battle of Cannae (; ) was a key engagement of the Second Punic War between the Roman Republic and Ancient Carthage, Carthage, fought on 2 August 216 BC near the ancient village of Cannae in Apulia, southeast Italy. The Carthaginians and their allies, led by Hannibal, surrounded and practically annihilated a larger Roman army of the mid-Republic, Roman and Italian army under the consuls Lucius Aemilius Paullus (consul 219 BC), Lucius Aemilius Paullus and Gaius Terentius Varro. It is regarded as one of the greatest tactical feats in military history and one of the worst defeats in Roman history, and it cemented Hannibal's reputation as one of antiquity's greatest tacticians. Having recovered from their losses at Battle of the Trebia, Trebia (218 BC) and Battle of Lake Trasimene, Lake Trasimene (217 BC), the Romans decided to engage Hannibal at Cannae, with approximately 86,000 Roman and allied troops. They massed their heavy infantry in a deeper formation than u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morale
Morale ( , ) is the capacity of a group's members to maintain belief in an institution or goal, particularly in the face of opposition or hardship. Morale is often referenced by authority figures as a generic value judgment of the willpower, obedience, and self-discipline of a group tasked with performing duties assigned by a superior. According to Alexander H. Leighton, "morale is the capacity of a group of people to pull together persistently and consistently in pursuit of a common purpose". With good morale, a force will be less likely to give up or surrender. Morale is usually assessed at a collective, rather than an individual level. In wartime, civilian morale is also important. Definition Military history experts have not agreed on a precise definition of "morale". Clausewitz's comments on the subject have been described as "deliberately vague" by modern scholars. George Francis Robert Henderson, a widely read military author of the pre-World War I era, viewed mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobility (military)
Mobility in military terms refers to the ability of a weapon system, combat unit or armed force to move toward a military objective. Combat forces with a higher mobility are able to move more quickly, and/or across more hostile terrain, than forces with lower mobility. Mobility is regarded as a vital component of the modern battlefield, as the ability to deliver weapon systems or combat units to their objective quickly can often mean the difference between victory and defeat. Armies around the world have massively increased their mobility over the last 100 years. In World War I, for example, most combat units could move on the battlefield only as fast as a soldier could walk. In the face of overwhelming firepower presented by machine guns and artillery, that resulted in stalemate and an inability to outmaneuver the enemy. By World War II, battlefield mobility had greatly improved with the development of the tank, and with tracked and other mechanized vehicles, to move forces to, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retreat (military)
A tactical withdrawal or retreating defensive action is a type of military operation, generally meaning that retreating forces draw back while maintaining contact with the enemy. A withdrawal may be undertaken as part of a general retreat, to consolidate forces, to occupy ground that is more easily defended, force the enemy to overextend to secure a decisive victory, or to lead the enemy into an ambush. It is considered a relatively risky operation, requiring discipline to keep from turning into a disorganized rout or at the very least doing severe damage to the military's morale. Tactical withdrawal A withdrawal may be anticipated, as when a defending force is outmatched or on disadvantageous ground, but it must cause as much damage to an enemy as possible. In such a case, the retreating force may use a number of tactics and strategies to further impede the enemy's progress. That could include setting mines or booby traps during or before the withdrawal, leading the enemy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terrain
Terrain (), alternatively relief or topographical relief, is the dimension and shape of a given surface of land. In physical geography, terrain is the lay of the land. This is usually expressed in terms of the elevation, slope, and orientation of terrain features. Terrain affects surface water flow and distribution. Over a large area, it can affect weather and climate patterns. Bathymetry is the study of underwater relief, while hypsometry studies terrain relative to sea level. Importance The understanding of terrain is critical for many reasons: * The terrain of a region largely determines its suitability for human settlement: flatter alluvial plains tend to have better farming soils than steeper, rockier uplands. * In terms of environmental quality, agriculture, hydrology and other interdisciplinary sciences; understanding the terrain of an area assists the understanding of drainage divide, watershed boundaries, drainage basin, drainage characteristics, drainage system ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
